Projector emitting laser light of multiple colors and optical axis adjusting method for the projector

摘要

A first light output unit (3 1) integrally has a first light source (11) and a first prism (17), a second light output unit (32) integrally has a second light source (13) and a second prism (18), and a third light output unit (33) integrally has a third light source (15) and a third prism (19). A first surface (34) of the first prism (17) and a second surface (35) of the second prism (18) are adhered together by an adhesive with a first film (20) located therebetween, and first film (20) passes green laser light and reflects blue laser light. A third surface (36) of the second prism (18) and a fourth surface (37) of the third prism (19) are adhered together by an adhesive with a second film (21) located therebetween, and second film (21) passes the green laser light and the blue laser light, and reflects red laser light.